You are designing a Windows Phone 7 application that receives data from a Microsoft Windows Communication Foundation (WCF) service. A WCF service call fails when a user receives a phone call after the WCF service call begins but before it completes. You need to ensure that the WCF service call succeeds. What should you recommend?

You are designing a Windows Phone 7 application that receives data from a third-party RESTful service. The data is in JSON format. You need to recommend a way to consume the service. What should you recommend?

A Microsoft Windows Communication Foundation (WCF) service is hosted on a web server. You need to recommend the binding that can be used to access the WCF service from a Windows Phone 7 application. Which binding should you recommend?

You are designing a Windows Phone 7 application. The application must be able to receive data from a Microsoft Windows Communication Foundation (WCF) web service. You need to ensure that authentication requests are passed to the WCF web service. What should you recommend?

You are designing a Windows Phone 7 application. The application must use a dynamic application key to access a companys web services. You need to recommend a way to help keep the application secure. What should you recommend?